Search results for "Frame"
showing 10 items of 1767 documents
Treatment Needs and Service Delivery for Patients with Dual Disorders During the COVID-19 Pandemic: Findings From the WADD Survey
2021
Objective: The COVID-19 pandemic has posed a great challenge for the existing health systems. The restrictions imposed across countries on the movement of people and the realignment of health care services in response to the pandemic are likely to negatively affect the health status and delivery of mental health services to persons with dual disorders (PWDD). Methods: An online survey was conducted among mental health professionals involved in providing care to PWDD to better understand the problems encountered and identify potential solutions in providing continued treatment for PWDD during the COVID-19 pandemic. Results: The findings confirmed significant disruption in the delivery of tre…
Unveiled the Source of the Structural Instability of HKUST Powders upon Mechanical Compaction: Definition of a Fully Preserving Tableting Method
2019
Metal–organic frameworks (MOFs) are getting closer to finally being used in commercial applications. In order to maximize their packing density, mechanical strength, stability in reactive environments, and many other properties, the compaction of MOF powders is a fundamental step for the application field of research of these extraordinary materials. In particular, HKUST-1 is among the most promising and studied MOF. Contrary to what reported so far in the literature, here we prove that the tableting of HKUST-1 powders without any damage of the lattice is possible and easy to get. For the first time, this kind of investigation has been performed exploiting its peculiar magnetic properties w…
Tetrazine Linkers as Plug-and-Play Tags for General Framework Functionalization and C60 Conjugation
2022
The value of covalent post-synthetic modification in expanding the chemistry and pore versatility of reticular solids is well documented. Here we use mesoporous crystals of UiO-68-TZDC to demonstrate the value of tetrazine connectors for all-purpose inverse electron-demand Diels-Alder ligation chemistry. Our results suggest a positive effect of tetrazine reticulation over its reactivity for quantitative one-step functionalization with a broad scope of alkene or alkyne dienophiles into pyridazine and dihydropyridazine frameworks. This permits generating multiple pore environments with diverse chemical functionalities and the expected accessible porosities, that is also extended to the synthe…
MOF derivatives as cage for alkali-metal azides: a DFT study
2012
Chemical Engineering of Photoactivity in Heterometallic Titanium–Organic Frameworks by Metal Doping
2018
[EN] We report a new family of titanium-organic frameworks that enlarges the limited number of crystalline, porous materials available for this metal. They are chemically robust and can be prepared as single crystals at multi-gram scale from multiple precursors. Their heterometallic structure enables engineering of their photoactivity by metal doping rather than by linker functionalization. Compared to other methodologies based on the post-synthetic metallation of MOFs, our approach is well-fitted for controlling the positioning of dopants at an atomic level to gain more precise control over the band-gap and electronic properties of the porous solid. Changes in the band-gap are also rationa…
Miradas letradas, letras ad-miradas. Una conversación con el mundo social
2019
El presente texto plantea una aproximación al concepto de miradas le- tradas en contextos educativos utilizando como recurso expresivo la metáfora de la conversación. Las miradas letradas quedan caracterizadas como estrategias que bus- can reconfigurar nuevas formas de leer, conocer y expresar la realidad social.Tras esta caracterización, la discusión se centra en la necesidad de generar nuevos entor- nos de aprendizaje mediante espacios le- trados, que estimulen y sean favorables a la lectura y a la escritura. La conclusión sostiene que estos entornos requieren la transformación de las instituciones edu- cativas y culturales en lugares diferentes a los que hasta ahora resultaban hab…
Capability-based Communication Analysis for Enterprise Modelling
2018
Capability-oriented enterprise modelling can provide effective solutions to face changing business context. In the business domain, the notion of capability has gained a lot of attention since it guides the activities of service specification and design. Simultaneously, the research community has been promoting the integration of model-driven development (MDD) approaches with enterprise modelling to support the link between enterprise and software specifications. This integration has becoming vital to ensure the traceability of enterprise models and software implementations, acceleration of software time to market, quality assurance, and enterprise model evolution support. The capability-dr…
Mode superposition methods in dynamic analysis of classically and non-classically damped linear systems
1986
Mode-superposition analysis is an efficient tool for the evaluation of the response of linear systems subjected to dynamic agencies. Two well-known mode-superposition methods are available in the literature, the mode-displacement method and the mode-acceleration method. Within this frame a method is proposed called a dynamic correction method which evaluates the structural response as the sum of a pseudostatic response, which is the particular solution of the differential equations, and a dynamic correction evaluated using a reduced number of natural modes. The greater accuracy of the proposed method with respect to the other methods is evidenced through extensive numerical tests, for class…
Invisible Ends Justify Secret Means: Homeland, Machiavelli, and the Least of All Possible Evils
2021
In the rhetoric informing Niccolò Machiavelli’s thought and the contemporary War on Terror, the dialectic between ethics and necessity within the framework of the process of secularization represents a cohesive thread. This very dialectic constitutes also the narrative principle presiding Homeland, one of most insightful TV shows having developed a critical reflection about the present time so far. Dealing with terrorist practices and counterterrorism tactics, the series provides an accurate depiction of the fears featuring nowadays Western societies and the means through which American institutions attempt to answer them . This essay proposes a survey of the conceptual core belonging to th…
Editorial: Recent Advances in Symbiosis Research: Integrative Approaches
2016
Symbiosis research is being transformed by new model systems and technologies that bring forth unexpected discoveries. Technological advances such as those stemming from Next Generation Sequencing enable detailed insights into the molecular bases of symbiotic relationships, and have revolutionized the study of complex microbial communities. As new data gathers, the need grows for a conceptual framework that helps organize and make sense of the information. Here, we present some ground-breaking works pushing the boundaries of our understanding of symbiosis in a variety of systems, as well as some state-of-the-art attempts at putting forward organizing principles for the whole of symbiology.